Based on the photo, and assuming they are in working condition, I would value them at roughly $10 (USD) each. Though very old, these bulbs were mass produced and have little value among collectors because so many have survived to this day.

You see that's interesting as someone on another forumHad told me that they are actually quite rare and saught after by collectors. Seems odd that I would get two so different opinions.

I've also noticed that I can find hardly any reference to them on search engines or eBay. I can only find one other picture on 50 pages of google of this brand and that looks much more modern. Which suggests that they are more rare than that...